solve the following system of equations by gauass jordan method 3x-y+2z=12,X+2y+3z=11,2x-2y-z=2
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3x-y+2z=12_____(1)
x+2y+3z= 11______(2)
2x-2y-z=2______(3)
multiply both sides of 2 by 2
2x+4y +6z =22____(4)
subtracting 3 from 4
6y +7z = 20____(5)
multiply both sides of 2 by 3
3x +6y+9z = 33____(6)
subtracting 1 from 6
7y +7z = 21_____(7)
subtracting 5 from 7
y = 1
put the value of Y in equation 7
z=2
putting the value of Y and Z in equation 3
x= 3
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